Automatic fire-extinguisher



(No Model.)

B. H. WILLIAMS.

AUTOMATIC FIRE EXTINGUISHER. No; 328,908..

' W I'INESSESZ INVENIQR I UNITED STATES PATENT OFFICE.

EDI/VARD H. WILLIAMS, OF DAYTON, OHIO.

AUTOMATIC FIRE-EXTINGUISHER.

SPECIFICATION forming part of Letters Patent No. 328,908, dated October 20, 1885.

Application filed October 31, 1884.

To all whom it may concern:

Be it known that I, EDWARD H. VVILLIAMS, of Dayton, in the county of Montgomery and State of Ohio, have invented a new and useful Improvement in Automatic Fire-Extinguishers, which improvement is fully set forth in the following specification and accompanying drawings, in which- Figure lis a side view of my improved automatic fire-extinguisher. Fig. 2 is a view of the lower side of the same, and Fig. 3 a side view showing the position of the parts after being fractured. Fig. 4 is a perspective bottom view of the device.

The present invention relates to an improvement in fire-extinguishers, and has for its object the easy and rapid extinction of fires automatically as soon as the room is heated to a sufficient temperature.

It consists of a glass or other suitable vessel having externally-vertical V-shaped grooves, and provided at the upper part of the neck with corresponding V shaped grooves. A spring and hammer attachment placed in the bottom of the said vessel is designed to operate on the detonating cap when the spring is loosened from its position by the heat of the fire in the room, thus causing the fracture of the said vessel along the lines of the V-shaped grooves and permitting the escape of the acid into the room. The V-shaped grooves at the upper part of the neck permit the upper part of the said neck coming together within the band, bymeans of which the vessel is suspended in the room, thus permitting the sections of the vessel, after being fractured by the detonating cap, extending outwardly at an angle. This prevents the parts of the vessel from dropping upon the floor and becoming broken into fragments, all of which will now be fully set forth in detail.

In the accompanying drawings, A is a globular or other shaped vessel (preferably glass or other suitable material) provided with a suitable neck, B, for the purpose of introducing the material within the said vessel. The up per part is provided with an external flange, O, of sufficient size so that a band, D, placed around the neck will not become disengaged therefrom. A suitable wire loop, E, secured to the band D, extends upwardly, and may Serial No. 146,896. (No model.)

be secured in any suitable position in the room, so as to suspend the vessel, as found convenient. The upper part of the neck is provided with V-shaped grooves F, connected at their lower ends with corresponding vertical V- shaped grooves, G, which extend down each side of the vessel, across the bottom, and up to the opposite V-shaped opening, F. Within this vessel I provide a preparation of chemicals that will extinguish fires, and retain the said preparation in the vessel by means of a cork, F,'forced into the neck below the V- shaped opening F. A right-angled metallic piece, G, secured in a recess, R, formed in the bottom of the vessel A by means of cement or in any other suitable manner, has hinged.

thereto an arm, I, having at one end a hammer, I, and at the other secured to the rightangled piece G by means of a soldered band, J. An extensile spring, K, throws the hammer 1 forward against the detonating cap L on the opposite arm of the angle-piece G when the soldered band J is melted by the heat. This solder J may be made of a preparation of solder that will melt at a low temperature.

The detonating cap and lug are designed to be placed in close proximity to the external V-shaped grooves, which, extending around the vessel, make the glass thinner in that part than in any other and divide it into sections.

The spring is designed to be of sufficient tension so that when the hammer comes in con tact with the detonating cap or fulminate it will produce a fracture on the vessel along the lines of the grooves.

I prefer to form the vessel with four V- shaped openings, F, at the upper part, and also four corresponding V-shaded grooves, G, so that when the vessel is fractured it will constitute four individual parts. It is obvious that the vessel may be formed with any suitable number of openings at the top and corre sponding vertical grooves. Four, however, I consider preferable.

The bandD is the suspension-band, to which the wire loop E is attached, and the diameter of this band with respect to the diameter of the bead or flange O is such that the vessel A is safely held in suspension before and after fracture.

The supplemental groove at right angles to the groove G is designed to so reduce the thickness of the glass along its line that the shock or concussion will crack the glass along the groove G, will in most instances also crack the glass along said supplemental groove, and thus divide vessel A into four parts.

What I claim is 1. In a hand-grenade, a vitreous vessel, A, having a flanged neck, B, and grooved, as described, in combination with a spring-actuated hammer and a fusible band, J, substantially as described.

2. In a fire-extinguisher, the combination of the grooved vessel A, having a depression in it, a fixed angular piece, G, provided with a detonating cap, a hammer pivoted to this piece and acted on by a spring for exploding said cap, and a fusible connection, J, substantially as described.

3. The combination, in a fire-extinguisher, of the vessel having at the upper part a V- shaped groove and a corresponding groove extending around the said vessel, the flanged neck, its retaining-band and suspension-loop, a detonating cap, a spring-actuated hammer for exploding the same, and a fusible band, J, substantially as described.

4. The combination .of the vessel having at the upper end a V-shaped groove and corresponding vertical grooves, the recess R, the fixed angular piece G, a pivoted spring-actuated hammer, a detonating cap, and fusible solder J, substantially as described.

5. The combination, with the grooved vessel A, provided with a detonating device in V35 its recessed bottom, of a flanged neck having- 

